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    Wyświetlanie 1-7 z 7
    Tytuł:
    Investigation of the settlement prediction in soft soil by Richards Model: based on a linear least squares-iteration method
    Autorzy:
    Nadeem, Muhammad
    Akbar, Muhammad
    Huali, Pan
    Xiaoqing, Li
    Guoqiang, Ou
    Amin, Azka
    Powiązania:
    https://bibliotekanauki.pl/articles/1852538.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    metoda iteracji liniowej
    metoda najmniejszych kwadratów
    prognoza
    grunt słaby
    podłoże gruntowe
    błąd porównawczy
    osiadanie gruntu
    model obliczeniowy
    linear iterative method
    least square method
    prediction
    soft soil
    comparative error
    settlement
    calculation model
    Opis:
    Prediction of soft soil sub-grades settlement has been a big challenge for geotechnical engineers that are responsible for the design of roadbed embankment. The characteristics of low strength, poor permeability, high water contents, and high compressibility are dominant in soft soils, which result in a huge settlement in the case of long-term loading. The settlement prediction in soft soil subgrades of Jiehui Expressway A1, Guangdong, China, is the focus of this study. For this purpose, the necessary data of settlement is collected throughout the project execution. The numerical analysis is conducted by using the Richards model based on Linear Least Squares Iteration (LLS-I) method to calculate and predict the expected settlement. The traditional settlement prediction methods, including the hyperbolic method, exponential curve method, and pearl curve method, are applied on field settlement data of soft soil subgrades of Jiehui Expressway A1. The results show that the Richards model based on Linear Least Squares Iteration (LLS-I) method has high precision, and it has proven to be a better option for settlement prediction of soft soil sub-grades. The model analysis indicates that the mean absolute percentage error (MAPE) can be minimized as compared to other soft soil sub-grades settlement prediction methods. Hence, Richards's model-based LLS-I method has a capability for simulation and settlement prediction of soft soil subgrades.
    Źródło:
    Archives of Civil Engineering; 2021, 67, 2; 491-506
    1230-2945
    Pojawia się w:
    Archives of Civil Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    New generators for minimal circular generalised neighbour designs in blocks of two different sizes
    Autorzy:
    Nadeem, Muhammad
    Noreen, Khadija
    Kashif Rasheed, H. M.
    Ahmed, Rashid
    Hassan, Mahmood Ul
    Powiązania:
    https://bibliotekanauki.pl/articles/14769686.pdf
    Data publikacji:
    2023-03-15
    Wydawca:
    Główny Urząd Statystyczny
    Tematy:
    direct effects
    neighbour effects
    method of cyclic shifts
    generalised NDs
    GN2-designs
    Opis:
    Minimal neighbour designs (NDs) are used when a response of a treatment (direct effect) is affected by the treatment(s) applied in the neighbouring units. Minimal generalised NDs are preferred when minimal NDs cannot be constructed. Through the method of cyclic shifts (Rule I), the conditions for the existence of minimal circular generalised NDs are discussed, in which v/2 unordered pairs do not appear as neighbours. Certain generators are also developed to obtain minimal circular generalised NDs in blocks of two different sizes, where k2 = 3, 4 and 5. All these designs are constructed using i sets of shifts for k1 and two for k2.
    Źródło:
    Statistics in Transition new series; 2023, 24, 2; 85-92
    1234-7655
    Pojawia się w:
    Statistics in Transition new series
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The effect of basalt knitted fabric on the properties of green epoxy resin
    Wpływ tkaniny bazaltowej na właściwości „zielonej” żywicy epoksydowej
    Autorzy:
    Jamshaid, Hafsa
    Rajput, Abdul Waqar
    Zahid, Bilal
    Memon, Sanam
    Qureshi, Raja Fahad
    Aslam, Sarmad
    Nadeem, Muhammad
    Powiązania:
    https://bibliotekanauki.pl/articles/2088265.pdf
    Data publikacji:
    2022
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Chemii Przemysłowej
    Tematy:
    green composites
    tensile properties
    impact strength
    „zielone” kompozyty
    właściwości mechaniczne przy rozciąganiu
    udarność
    Opis:
    The influence of basalt fabric on the tensile mechanical properties and the impact resistance of green epoxy resin was investigated. Composites with parallel arrangement of insert yarns had better properties than in the case of their perpendicular arrangement. The properties were also influenced by the number of layers of the fabric. The tensile strength and impact resistance of the composites were better than the commercially available side mirror covers due to the superior properties of the basalt fiber.
    Zbadano wpływ tkaniny bazaltowej na właściwości mechaniczne przy rozciąganiu i odporność na uderzenie „zielonej” żywicy epoksydowej. Kompozyty o równoległym ułożeniu przędzy charakteryzowały się lepszymi właściwościami niż te o prostopadłym ułożeniu. Na właściwości miała również wpływ liczba warstw tkaniny. Wytrzymałość na rozciąganie i odporność na uderzenie kompozytów były lepsze niż dostępnych na rynku osłon lusterek bocznych ze względu na dobre właściwości włókna bazaltowego.
    Źródło:
    Polimery; 2022, 67, 2; 67--71
    0032-2725
    Pojawia się w:
    Polimery
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analysis of the effect of wire electric dischage machining process parameters on the formation of high speed steel form tool
    Autorzy:
    Ishfaq, Kashif
    Mufti, Nadeem Ahmad
    Jawad, Muhammad
    Sajid, Muhammad
    Jahanzaib, Mirza
    Powiązania:
    https://bibliotekanauki.pl/articles/103183.pdf
    Data publikacji:
    2018
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    wire electrical discharge machining (WEDM)
    response surface methodology (RSM)
    ANOVA
    material removal rate (MRR)
    surface roughness (Ra)
    wycinanie elektroerozyjne drutem
    metoda powierzchni odpowiedzi (RSM)
    wskaźnik usuwania materiału (MRR)
    chropowatość powierzchni (Ra)
    Opis:
    The use of form tools is growing in industry, owing to their inherent advantage of improving productivity. However, the accurate formation of form tool profile is a really tedious task. In this research work, wire electric discharge machining (WEDM) process has been used for the generation of a form tool. Pulse on-time, pulse off-time, servo voltage, wire tension, flushing pressure have been considered as input parameters, whereas tool geometry (clearance angle, included angle), surface roughness and material removal rate are the selected responses. Response surface methodology (RSM) (Box Bhenken experimental design) technique has been used for design of experiments. Analysis of Variance (ANOVA) has shown that pulse on-time and pulse off-time are the two influential control factors for material removal rate (MRR), surface roughness (Ra), clearance angle and included angle. Contour plot analysis has been performed to find out the optimal ranges of the most influential control factors for each response characteristics.
    Źródło:
    Advances in Science and Technology. Research Journal; 2018, 12, 1; 89-98
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Is Your Purchase Intention Influenced by Irrational Factors? An Investigation of Fashion Industry
    Autorzy:
    Tahir Jan, Muhammad
    Mohamed Hamed Aly Abouzaid, Ahmed
    Nadeem, -
    Hossain, Tashpia
    Powiązania:
    https://bibliotekanauki.pl/articles/2054871.pdf
    Data publikacji:
    2020-12-08
    Wydawca:
    Uniwersytet Warszawski. Wydawnictwo Naukowe Wydziału Zarządzania
    Tematy:
    Irrational factors
    purchase intention
    fashion industry
    SEM
    Opis:
    This research paper mainly aims to identify and analyse irrational factors that impact consumers’ purchase intention, especially in the fashion industry. The data for this study were collected from 205 consumers of various nationalities via an online self-administered questionnaire. The acquired data were put through a thorough process to establish their relevance and to ensure that the data were ready for further analysis by applying the SPSS & AMOS software. Three irrational factors were extracted from the extant literature, namely, media, social impact, and emotions. These factors are reported to have a positive infl uence on the consumer’s purchase intention. First, a descriptive analysis was undertaken followed by an inferential analysis. Structural equation modelling (SEM) was used to test the fi tness of the proposed model and also to test the hypotheses. Two out of the total three hypotheses are supported. In this case, media infl uence and social infl uence emerged with a signifi cant positive impact on the consumer’s purchase intention. Even though emotions infl uence resulted in a positive impact, it was not statistically signifi cant and does not relate to the consumer’s purchase intention in the fashion industry. The fi ndings of this study have signifi cant contribution to the body of knowledge and practice. Marketing research, in general, and consumer research, in particular, will benefi t from the contribution of this research. Similarly, policy makers in the fashion industry may adopt the fi ndings of the present study to devise more eff ective marketing strategies. Indeed, this research highlights that the consumer’s purchase intention is not entirely in response to a particular phenomenon but a multitude of so-called “irrational” factors like media, society, and emotions.
    Źródło:
    Journal of Marketing and Consumer Behaviour in Emerging Markets; 2020, 2(11); 16-32
    2449-6634
    Pojawia się w:
    Journal of Marketing and Consumer Behaviour in Emerging Markets
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Bayesian estimation of a geometric distribution using informative priors based on a Type-I censoring scheme
    Autorzy:
    Akhtar, Nadeem
    Khan, Sajjad Ahamad
    Amin, Muhammad
    Khan, Akbar Ali
    Ali, Amjad
    Manzoor, Sadaf
    Powiązania:
    https://bibliotekanauki.pl/articles/20311948.pdf
    Data publikacji:
    2023-06-13
    Wydawca:
    Główny Urząd Statystyczny
    Tematy:
    prior distribution
    posterior distribution
    geometric distribution
    beta distribution
    Kumraswamy distribution
    Opis:
    In this paper, the geometric distribution parameter is estimated under a type-I censoring scheme by means of the Bayesian estimation approach. The Beta and Kumaraswamy informative priors, as well as five loss functions are used for this purpose. Expressions of Bayes estimators and Bayes risks are derived under the Squared Error Loss Function (SELF), the Quadratic Loss Function (QLF), the Precautionary Loss Function (PLF), the Simple Asymmetric Precautionary Loss Function (SAPLF), and the DeGroot Loss Function (DLF) using the two aforementioned priors. The prior densities are obtained through prior predictive distributions. Simulation studies are carried out to make comparisons using Bayes risks. Finally, a real-life data example is used to verify the model’s efficiency.
    Źródło:
    Statistics in Transition new series; 2023, 24, 3; 257-263
    1234-7655
    Pojawia się w:
    Statistics in Transition new series
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Comparison of the effect of zinc oxide nanoparticles and extract of Acorus calamus applied topically on surgical wounds inflicted on the skin of rabbits
    Autorzy:
    Abbas, A.
    Muhammad, S.A.
    Ashar, A.
    Mehfooz, S.A.
    Rauf, A.
    Bakhsh, M.
    Nadeem, T.
    Fu, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/16648000.pdf
    Data publikacji:
    2023
    Wydawca:
    Polska Akademia Nauk. Czasopisma i Monografie PAN
    Tematy:
    antibiotic resistance
    nanoparticle
    plant extract
    wound
    Opis:
    Antibiotics are used for postsurgical wound healing purposes but unfortunately, resistance against them demands some alternatives for quick recovery. Sepsis of wounds is a challenge for medical as well as veterinary professionals. Nanoparticles have significant advantages in wound treatment and drug resistance reversal. This study was conducted to appreciate emerging alternates of antibiotics like zinc oxide nanoparticles and plant extracts in topical application. Zinc oxide is considered a good wound healer and its nanoparticles are easy to access. So, the efficacies of zinc oxide nanoparticles and sweet flag plant extract ointments were tested to compare modern and traditional therapeutics as sweet flag is considered a pure medicinal plant. Rabbits were selected for this study due to the healing properties of their skin. Wounds were inflicted on the thoracolumbar region and treated for 29 days post-surgically daily with normal saline and the ointment of zinc oxide nanoparticles and sweet flag extract ointment, prepared in a hydrophilic solvent. Wound shrinkage was observed daily and histopathological analysis was made and results were compared. Zinc oxide nanoparticles ointment showed the most satisfactory results for every parameter included in the study. No side effects of its topical application were observed. Healing was normal without any complications. The preparations of zinc oxide nanoparticles may help in the era of antibiotic resistance as topical drugs in the future.
    Źródło:
    Polish Journal of Veterinary Sciences; 2023, 26, 2; 285-293
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-7 z 7

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